...Sona said that Nick Kouvalis, a strategist with the firm Campaign Research, which does polling and brand management for Conservative politicians, was in the office (of Marty Burke's CPC Guelph Campaign) between eight to 12 times during the campaign. Records show the firm billed Burke's campaign for $6,215 for voter identification services and for a robocall to recruit volunteers...

And to Ms. Payton's credit she got Mr. Kouvalis to respond:

...Kouvalis, however, disputed Sona's assertion, saying on Twitter that he was in the riding one night during the writ period for debate preparation, then once more three nights later to watch the debate.